Loran-A system

简明释义

罗兰A系统

英英释义

例句

1.With the help of the Loran-A system, we were able to pinpoint our location accurately.

在Loran-A系统的帮助下，我们能够准确地确定我们的位置信息。

2.During the training, we learned how to operate the Loran-A system effectively.

在培训期间，我们学习了如何有效地操作Loran-A系统。

3.The Loran-A system was widely used by fishermen to find their way back to the harbor.

渔民们广泛使用Loran-A系统来找到回港的路。

4.The ship used the Loran-A system to navigate through foggy waters.

这艘船使用Loran-A系统在雾蒙蒙的水域中导航。

5.The reliability of the Loran-A system made it a favorite among sailors.

由于Loran-A系统的可靠性，它成为水手们的首选。

作文

The Loran-A system is a long-range navigation system that was developed in the United States during World War II. It was primarily designed to assist ships and aircraft in determining their position over the ocean. The name 'Loran' stands for 'Long Range Navigation.' The Loran-A system uses a network of ground-based radio transmitters to send signals to receivers on ships and planes. These signals are then used to calculate the distance from the transmitter, allowing navigators to pinpoint their location accurately. In its early days, the Loran-A system was revolutionary. Before its introduction, navigators relied heavily on celestial navigation, which required clear skies and a good understanding of the stars. The Loran-A system, however, provided a more reliable means of navigation, especially in poor weather conditions. This technology greatly improved the safety and efficiency of maritime and aerial operations. The basic operation of the Loran-A system involves several key components: the transmitters, the receivers, and the timing of the signals. Transmitters are strategically located along coastlines or on islands, broadcasting signals at precise intervals. The receivers on ships or aircraft pick up these signals and measure the time it takes for each signal to arrive. By knowing the speed of radio waves, the receiver can calculate the distance to each transmitter. With data from multiple transmitters, the receiver can triangulate its exact position. As technology advanced, the original Loran-A system was eventually replaced by more sophisticated systems such as Loran-C, which offered improved accuracy and reliability. However, the principles established by the Loran-A system laid the groundwork for modern navigation technologies, including GPS. Today, while GPS has become the dominant form of navigation, the legacy of the Loran-A system remains significant in the history of navigational aids. In conclusion, the Loran-A system represents a pivotal development in navigation technology. Its introduction marked a shift from traditional methods to a more modern approach, allowing for greater accuracy and safety in navigation. Although it has largely been supplanted by newer technologies, the impact of the Loran-A system continues to be felt, reminding us of the importance of innovation in enhancing our ability to navigate the world around us.

Loran-A系统是一种远程导航系统，二战期间在美国开发。它主要旨在帮助船只和飞机确定在海洋上的位置。“Loran”这个名字代表“长距离导航”。Loran-A系统使用一个基于地面的无线电发射机网络向船只和飞机上的接收器发送信号。这些信号随后用于计算与发射机的距离，从而使导航员能够准确地确定他们的位置。在早期，Loran-A系统是革命性的。在其引入之前，导航员主要依赖天文导航，这需要晴朗的天空和对星星的良好理解。然而，Loran-A系统提供了一种更可靠的导航手段，尤其是在恶劣天气条件下。这项技术极大地提高了海洋和航空作业的安全性和效率。Loran-A系统的基本操作涉及几个关键组件：发射机、接收机和信号的时序。发射机位于海岸线或岛屿上，按照精确的间隔广播信号。船只或飞机上的接收机接收这些信号，并测量每个信号到达所需的时间。通过知道无线电波的速度，接收机可以计算到每个发射机的距离。通过多个发射机的数据，接收机可以三角定位其确切位置。随着技术的进步，最初的Loran-A系统最终被更先进的系统如Loran-C所取代，后者提供了更高的准确性和可靠性。然而，Loran-A系统建立的原则为现代导航技术奠定了基础，包括GPS。今天，尽管GPS已成为主导导航形式，但Loran-A系统的遗产在导航辅助设备的历史中仍然具有重要意义。总之，Loran-A系统代表了导航技术的发展关键。它的引入标志着传统方法向更现代方法的转变，使导航的准确性和安全性得以提高。尽管它在很大程度上被更新的技术所取代，但Loran-A系统的影响仍然显著，提醒我们创新在增强我们导航周围世界的能力方面的重要性。